More tests updated to optimize code (Part 2).

tests/language/instance_incr_deopt_test.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
+// VMOptions=--optimization-counter-threshold=10 --no-use-osr
 
 import "package:expect/expect.dart";
 
 // Check correct deoptimization of instance field increment.
 
 
 main() {
   var a = new A();
   var aa = new A();
-  for (int i = 0; i < 2000; i++) {
+  for (int i = 0; i < 20; i++) {
     a.Incr();
     myIncr(aa);
     conditionalIncr(false, a);
   }
-  Expect.equals(2000, a.f);
-  Expect.equals(2000, aa.f);
+  Expect.equals(20, a.f);
+  Expect.equals(20, aa.f);
   a.f = 1.0;
   // Deoptimize ++ part of instance increment.
   a.Incr();
   Expect.equals(2.0, a.f);
   var b = new B();
   // Deoptimize getfield part of instance increment.
   myIncr(b);
   Expect.equals(1.0, b.f);
   // Deoptimize since no type feedback was collected.
   var old = a.f;
@@ skipping 17 matching lines @@
     f++;
   }
   var f;
 }
 
 class B {
   B() : f = 0;
   var f;
 }